SL183044 bearing: complete specifications & equivalents

Specification table

Source: catalog reference (HR1 2026-09-25) · extracted 2026-09-30

Parameters extracted from the official FAG Rolling Bearings catalogue (HR1 2026-09-25); FAG® is a trademark of Schaeffler Technologies AG & Co. KG, used here for identification only — mpnbase is not an authorized FAG/Schaeffler distributor. Boundary dimensions are ISO 15 interchangeable; current production values may differ, verify at schaeffler.com.

Cross references & equivalents

Interchange levels: full standard interchange · partial verify parameters · verify manual confirmation required. Links resolve to the equivalent model's specification page where available.

How the SL183044 model number is decoded

envelope 220×340×90 mm with a 60.0 mm radial section; every available circumferential space carries a roller because there is no cage C is 1150 kN and C0 1820 kN; with a C/C0 ratio of 0.63 the 90 mm-wide full complement concentrates on extreme static and steady radial capacity rather than speed the fatigue load limit Cur is 219 kN, the limiting speed 1,140 r/min and the thermal reference speed 800 r/min — full-complement roller-to-roller contact keeps both speeds well below caged cylindrical bearings of the same size the dynamic rating is 5.23 kN per millimetre of the 220 mm bore and 12.78 kN per millimetre of the 90 mm width, figures that explain the use of this bearing in compact, heavily loaded gearbox positions mass is 28.4 kg (28400 g) (0.93 g per mm² of the 340×90 mm envelope); the stiff, thick rings keep raceway deformation low under peak loads at 220 mm bore this is among the largest catalogue sizes; the 1,140 r/min limiting speed confirms a slow-speed, extreme-load application such as a slewing or rolling-mill position The dimension-series digits place this bearing in the SL18 section of the HR1 plan, giving the 60.0 mm section height between the 220 mm bore and the 340 mm outside diameter Reading the designation: SL18 marks the Schaeffler full-complement semi-locating type with one rib on the outer ring and two ribs on the inner ring; the rollers are axially guided by the inner ring while the outer ring can displace by the catalogue s-value Typical applications include heavy industrial gearbox shafts, crane travelling-wheel mechanisms and vibrating and oscillating machinery, where the 340 mm outside diameter and 1150 kN dynamic rating match the duty. In heavy industrial gearbox shafts the unit fits a compact 220 mm seat, and in crane travelling-wheel mechanisms the 28.4 kg mass is part of the rotor inertia calculation. Designers also specify it for vibrating and oscillating machinery, relying on the 90 mm width and the published 1820 kN static rating. There is no cage: do not apply caged-bearing speed rules — the printed limiting speed is a hard kinematic ceiling set by roller-to-roller contact. C0 is the number that tempts overload in slow machinery, but fatigue life is still governed by the dynamic C rating and lubricant film.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• There is no cage: do not apply caged-bearing speed rules — the printed limiting speed is a hard kinematic ceiling set by roller-to-roller contact.
• C0 is the number that tempts overload in slow machinery, but fatigue life is still governed by the dynamic C rating and lubricant film.
• The bearings cannot accommodate angular misalignment; check shaft and housing parallelism before blaming the bearing for edge spalling.